Matching Items (75)

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Closing the Gap: An Investigation into the Barriers and Enablers to Cooperative Education at the New American University

Description

Cooperative education has a long-standing tradition within engineering education. As part of the experiential education field, it carries many success stories. Several universities offer a robust cooperative education track. In

Cooperative education has a long-standing tradition within engineering education. As part of the experiential education field, it carries many success stories. Several universities offer a robust cooperative education track. In recent years, Arizona State University has made the decision to formalize a cooperative education program. Arizona State University, like many other institutions, has long since provided career support and promoted internships as an excellent work experience option before graduation. The decision to formalize a cooperative education program speaks to a need for a more rigorous path to work experience for engineering students. This paper is an investigation into the barriers and enablers behind a young cooperative education program. These results indicate that while students do benefit from the program, growth of the program may be tied to creating a meaningful distinction between cooperative education and other learning opportunities.

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  • 2017-05

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A Supernumerary Wearable Soft Robotic Arm for Task Execution Assistance

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This thesis proposes the concept of soft robotic supernumerary limbs to assist the wearer in the execution of tasks, whether it be to share loads or replace an assistant. These

This thesis proposes the concept of soft robotic supernumerary limbs to assist the wearer in the execution of tasks, whether it be to share loads or replace an assistant. These controllable extra arms are made using soft robotics to reduce the weight and cost of the device, and are not limited in size and location to the user's arm as with exoskeletal devices. Soft robotics differ from traditional robotics in that they are made using soft materials such as silicone elastomers rather than hard materials such as metals or plastics. This thesis presents the design, fabrication, and testing of the arm, including the joints and the actuators to move them, as well as the design and fabrication of the human-body interface to unite man and machine. This prototype utilizes two types of pneumatically-driven actuators, pneumatic artificial muscles and fiber-reinforced actuators, to actuate the elbow and shoulder joints, respectively. The robotic limb is mounted at the waist on a backpack frame to avoid interfering with the wearer's biological arm. Through testing and evaluation, this prototype device proves the feasibility of soft supernumerary limbs, and opens up opportunities for further development into the field.

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  • 2016-05

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Overall Market and Performance Comparison of Coil-over and Air Shock Absorbers

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The SAE Baja series is a competition that challenges university student teams on all aspects of designing, building, and testing an all-terrain vehicle. In the competition, the teams present their

The SAE Baja series is a competition that challenges university student teams on all aspects of designing, building, and testing an all-terrain vehicle. In the competition, the teams present their engineering analysis of all components of their vehicle to a panel of professional engineers to show why the team's design is the overall best in performance and in manufacturing cost. Currently Arizona State University's SAE Baja team does not have a method to analyze their vehicle's suspension system, especially on the car's shock absorbers. The current solution to this problem is to change the shock absorber parameters, test drive the car, and repeat the shock absorber tuning until the car is able to produce the performance that the team desires. The following paper introduces and demonstrates three different methods, ADAMS Car, SOLIDWORKS, and MATLAB, that can be used to analyze the suspension system and gather data that can be used in the competition presentation. ADAMS Car is a power software that is used in the automotive and other engineering fields. The program does have a steep learning curve, but once the team is comfortable using it, ADAMS is very helpful with subsystem analysis and full body analysis. SOLIDWORKS can be used to perform motion analysis and drop tests, which can then be exported into ADAMS for further analysis. MATLAB can be used to model the Baja vehicle as a quarter model, which makes it easier for the team to model. Using the methods presented in this paper, ASU's Baja team can test coil-over and air shock absorbers to determine which type is more suitable for the performance and overall cost of the whole vehicle.

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  • 2016-12

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Biodiesel: Sustainable Production and Commercialization for Community Support

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This research focused on how low-income communities in Ghana could convert Waste Vegetable Oil (WVO) into biodiesel to supplement their energy demands. The 2016 World Energy Outlook estimates that about

This research focused on how low-income communities in Ghana could convert Waste Vegetable Oil (WVO) into biodiesel to supplement their energy demands. The 2016 World Energy Outlook estimates that about 8 million Ghanaians do not have access to electricity while 82% of the population use biomass as cooking fuel. However, WVO is available in almost every home and is also largely produced by hotels and schools. There are over 2,700 registered hotels and more than 28,000 educational institutions from Basic to the Tertiary level. Currently, most WVOs are often discarded in open gutters or left to go rancid and later disposed of. Therefore, WVOs serve as cheap materials available in large quantities with a high potential for conversion into biodiesel and commercializing to support the economic needs of low-income communities. In 2013, a group of researchers at Kwame Nkrumah University of Science and Technology (KNUST) in Ghana estimated that the country could be producing between 82,361 and 85,904 tons of biodiesel from WVOs generated by hotels alone in 2015. Further analysis was also carried out to examine the Ghana National Biofuel Policy that was introduced in 2005 with support from the Ghana Energy Commission. Based on the information identified in the research, a set of recommendations were made to help the central government in promoting the biodiesel industry in Ghana, with a focus on low-income or farming communities. Lastly, a self-sustaining biodiesel production model with high potential for commercialization, was proposed to enable low-income communities to produce their own biodiesel from WVOs to meet their energy demands.

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  • 2017-05

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Gun Violence in America: An International Comparison

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The purpose of this study was to compare and contrast gun legislation and gun violence in the United States against two international countries. The countries that were chosen were the

The purpose of this study was to compare and contrast gun legislation and gun violence in the United States against two international countries. The countries that were chosen were the United Kingdom and Switzerland. The goal was to use the existing gun control models from the two international countries to develop an opinion of what can be done differently in the United States to reduce gun-related crime rates on the home front. Analysis of crime rates between the three countries proved that the United States is the country with the highest gun crime incidence. Specifically, the United States has, on average, 35 times the number of gun-related deaths per 100,000 people per year as the United Kingdom, and 2 times more gun-related deaths per 100,000 people per year than Switzerland. It has been determined that both legislative and cultural related changes need to be implemented in the United States in order for violent crime rates related to guns to ever be reduced.

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  • 2016-05

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A Guide to Speech Recognition Algorithms

Description

Many tasks that humans do from day to day are taken for granted in term of appreciating their true complexity. Humans are the only species on the planet that have

Many tasks that humans do from day to day are taken for granted in term of appreciating their true complexity. Humans are the only species on the planet that have developed such an in-depth means of auditory communication. Recreating the mechanisms in the brain that recognize speech patterns is no easy task. This paper compares and contrasts various algorithms used in modern day ASR systems, and focuses primarily on ASR systems in resource constrained environments. The Green colored blocks in Figure 1 will be focused on in greater detail throughout this paper, they are the key to building an exceptional ASR system. Deep Neural Networks (DNNs) are the clear and current leader among ASR technologies; all research in this field is currently revolving around this method. Although DNNs are very effective, many older methods of ASR are used often due to the complexities involved with DNNs; these difficulties include the large amount of hardware resources as well as development resources, such as engineers and money, required for this method.

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  • 2015-12

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Design of Soft Robotic Grippers for Dexterous Manipulation in the Tasks of Daily Living

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This honors thesis project aims to design and develop the ideal design for a soft robotic grasper used in combination with a robotic supernumerary limb design for impaired individuals (i.e.

This honors thesis project aims to design and develop the ideal design for a soft robotic grasper used in combination with a robotic supernumerary limb design for impaired individuals (i.e. a wearable robotic limb that branches out of the body), to help accomplish the tasks of daily living. Observations of current grasper solutions for similar applications has led to a design that incorporates a soft, pneumatically controlled grasper which integrates with the existing limb. Computational models of the grasper design have been created which demonstrate the grasping capabilities of this proposal. Initial prototypes of this grasper approach have been fabricated for testing and analyses purposes to build a foundation for future implementation.

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  • 2016-12

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3DCycler: Product Launch/Development

Description

Three dimensional printing is a growing field and an excellent medium for rapid prototyping. Its expansion has accelerated over recent years due to the increased affordability of the technology. It

Three dimensional printing is a growing field and an excellent medium for rapid prototyping. Its expansion has accelerated over recent years due to the increased affordability of the technology. It is now at the point where the startup cost to get into the field is down to the hobbyist price point. This means that there is an extremely high demand for affordable printing media. Current media such as ABS and PLA is extremely easy to form, but expensive and petroleum intensive to create. A recycling system that could work with a large variety of waste products could change the way that the maker community recycles. This Honors Thesis, or "Creative Project" will be centered on the product launch of small business 3DCycler. Although this launch will require pulling information and skills from various branches of both Business and Science, the scope of this project will be limited to specifically the market entrance of our small business/ product. Within this blanket goal, the project aims to define our target market/ its niche(s), develop proper IP/ lockout strategies, define future manufacturing strategies, and to fully define our beta product. The research was empirical in nature. Through data gathering techniques (e.g., consultations, interviews, survey), exploration was performed. Through these techniques the company 3DCycler took several calculated pivots in order to prepare the company for a strategic product launch and eventual acquisition.

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  • 2016-12

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Determination of a Shape- and Size-Independent Material Modulus for Honeycomb Structures made by Fused Deposition Modeling

Description

The purpose of the project is to study how the mechanical properties of cellular structures made by Fused Deposition Modeling (FDM) change depending on the number of unit cells and

The purpose of the project is to study how the mechanical properties of cellular structures made by Fused Deposition Modeling (FDM) change depending on the number of unit cells and the cell geometry. Specimens with three geometries of regular hexagon, square, and equilateral triangle were produced by FDM. The number of cells was varied systematically in each of the three geometries. The samples were tested for compressive strength. The specimens were laser-scanned to determine the actual dimensions, and those values were used in calculations to reduce the dimensional errors. Based on the calculations and analysis, it was concluded that for each geometry, the material modulus converged to a limiting value as the number of unit cells approached "infinity", and the convergent values of the material modulus were approximately the same (within 10% of error) for the three geometries. The convergent values for the material modulus of the hexagon, square, and triangle geometries were 273ksi, 248ksi, and 262ksi respectively. The percentages of error of the square and triangle geometries with respect to the hexagon geometry were 4.0%, and 9.2%, respectively.

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  • 2016-12

Design and Fabrication of Soft Robotic Nautilus

Description

The field of soft robotics is a very quickly growing field that has yet to be fully explored or implemented in all of the possible applications. Soft robotics shows the

The field of soft robotics is a very quickly growing field that has yet to be fully explored or implemented in all of the possible applications. Soft robotics shows the greatest degree of possibility for mimicking biological systems effectively and accurately. This study seeks to set the groundwork for the development of a biomimetic nautilus using soft robotic methods. The study shows background research and discusses the methods used to develop a nautilus themed sub aquatic robot that uses a double bladder system and a pump to generate thrust for movement. The study shows how the unit would be fabricated and constructed. The study also explores why the second stage of the design failed and how it could potentially be fixed in future iterations.

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  • 2017-05